Improvement in back-saws



WILLIAMv CLEMSON.

Improvement in Back Saws.

N0, HQQ67 Paentd Oct. 17,1871..

QFFICE.

WILLIAMl OLEMSON, OF MIDDLETOWN, NEW YORK.

IMPROVEMENT lN BACK-SAWS.

Specification forming part 0f Letters Patent No. 119,967, dated October 17, 1871.

To all 'whom it may concern:

Be it known that I, VILLIAM OLEMSON, of Middletown, in the county of Orange,in the State of New York, have invented certain Improvements in Back-Saws, of which the following is a specification, the object of this invention being to produce a superior back-saw, and a 'saw that when so produced will be less in its cost 5 and it consists in the construction of the parts and their attachment together to form. the saw.

In the drawing, Figure l is a side view of the saw, and Fig. 2 is a transverse sectional view through the back and blade.

A is a connnon saw-blade of a back-saw. B is the hack or strengthening-lau, and has a longitudinal central groove, b, ofthe thickness ofthe saw on its lower edge, with a circular drop, a, at its forward end, and a tang or shank, b', at its handle end. O is the handle, of such forni as to be taken hold of by the hand and balance the saw in its work, and has a inortise in its forward end to receive the tang b ofthe back har B also, a groove or slit, as is usual, to receive the heel of the saw and hold it from working laterally. In the circular drop a, at the forward end ofthe hack bar B, is a hole with a screw-thread tapped in one side, and in the tang is another, while the handle O has a hole in it to correspond with the hole in the tang, in which is a rivet or pin to hold the back har in the handle, and another to receive the screw D that holds the handle to the saw. Saw-blade Ahas a hole near its forward upper corner to correspond with the hole in the circular drop at the forward end of back har B to receive a screw, a', and another in its heel end to coincide with the hole in the handle to receive the screw D.

When the parts are thus constructed they are put together by first placing the saw in the groove b in the back B, and then insert the screw a in hole c and turn it home; then insert the I Having thus described my invention, what I claim, and desire to secure by Letters Patent, is-

The back-saw herein described, when formed with the saw-blade A, grooved back-bar B, and handle C, and connected together in the manner herein described. v

WM. GLEMSON.

Witnesses LEMUEL VHEELER,

CEAS. I. HUMPHREY. (131) 

